The burning Nepal is another example where the youth took on the system to overthrow the government. Being a small nation, we would have expected a peace and harmony but the corruption (wealthier getting wealtheir) took on the public and get agitated. May be there could be more to it. But for the time being this is what appears to other... if the recent shooting was the result of gun culture then why not others ? There could be more angles to it....the era is considered to be the most impatient one. They only see killing as a solution to all issue.
I suspect there will be more of it, but what tends to happen is that small groups use the masses as a way to push their own outlier agendas and get violent. It is going to be a terrible few years ahead.